arviz.smooth_data#

arviz.smooth_data(obs_vals, pp_vals)[source]#

Smooth data using a cubic spline.

Helper function for discrete data in plot_pbv, loo_pit and plot_loo_pit.

Parameters:

obs_vals(N) array_like: Observed data
pp_vals(S, N) array_like: Posterior predictive samples. N is the number of observations, and S is the number of samples (generally n_chains*n_draws).

Returns:

obs_vals(N) ndarray: Smoothed observed data
pp_vals(S, N) ndarray: Smoothed posterior predictive samples